from flask import render_template, Flask, url_for, jsonify, request,json
from werkzeug.utils import secure_filename

app = Flask(__name__)


@app.route('/')
def hello_word():
    return 'Hello World'


@app.route('/user/<name>')
def username(name):
    if (name == "张三"):
        name = "真是张三"
    else:
        name = "不是张三，而是" + name
    return '<h1>hello,%s<h1>' % name


@app.route('/user/show')
def user():
    users = [['张三', '男', '重庆'],
             ['李四', '女', '河南']]
    return render_template("user.html", list=users)


@app.route('/url')
def redirect_to_url():
    return url_for('post_show', post_id=666)


@app.route('/post/<int:post_id>')
def post_show(post_id):
    return 'Post ID : %d' % post_id


@app.route('/getJson')
def getJson():
    data = {
        "name": "张三",
        "sex": "男",
        "age": 20,
        "address": "xxxx"
    }
    # 将数据转json,这个数据可以是任何
    return jsonify(data)


# Get 传参
# post 传参
@app.route('/login', methods=['GET', 'post', 'put'])
def login():

    if request.method == 'GET':
        print("当前请求方法是GET")
    elif request.method == 'post':
        print("当前请求方式是POST")
    elif request.method == 'put':
        print("当前请求方式是PUT")
        username = request.args.get("username")
        address = request.values.get("address")

        data = {
            "username": username,
            "address": address
        }
        print(data)
        return jsonify(data)


#传递json
@app.route('/passJson',methods=['POST'])
def passJson():
    data = json.loads(request.get_data(as_text = True))

    #写业务程序
    return jsonify(data)

#上传文件
#步骤1，创建路由，创一个到静态文件的路由
@app.route('/upload/index')
def toUploadPage():
    return render_template('upload.html')

#步骤2，静态文件中有文件上传功能，点击该功能上传文件
@app.route('/upload',methods=['POST'])
def upload():
    if request.method == 'POST':
        file = request.files['file']
        print(request.files)

        file.save(secure_filename(file.filename))

        #可以做其他业务，比如人脸识别等等
        return "文件上传成功！"
    else:
        return render_template('upload.html')


#访问数据库（mysql）

if __name__ == '__main__':
    app.debug = True
    app.run()
